Die for finishing pulley-spoke blanks.



No. 630,450. Patented Aug. 8, I899. T. CORSCADEN, Decd.

A. 1. GORSGADEN, Administratrix. I DIE FOR FINISHING PULLEY SPOKEBLANKS.

(Application filed Oct. 3, 1898.)

(No Model.) 2 Sheets-Sheet l.

Wneaaew M71730)? 6205, 5M1). @Yseam" QV%% Wfl m: uokms PETERS cu.womajmou WASHINGTON, 11c.

No. 630,450. Patented Aug. 8, I899.

- T. CORSCADEN, Decd.

A. 1. consume", Administratrix.

DIE FOR FINISHING PULLEY' SPDKE BLANKS.

(Application fllad Oct. 8, 1898.) (No Model.) 2 Sheets-'Sheat 2.

FIG.4-

UNITED STATES PATENT rrron.

ADELINE J. CORSOADEN, OF PHILADELPHIA, PENNSYLVANIA, ADMINIS- TRATRIX OFTHOMAS CORSCADEN, DECEASED.

DIE FOR FINISHING PULLEY-SPOKE BLANKS.

SPECIFICATION forming part of Letters Patent No. 630,459, dated August8, 1899.

Application filed October 8, 1898.

suitable devices for punching and shearing.

(either or both) the outer ends of spoke-arms when formed of sheet metaland preferably constituting a single blank. In the manufacture ofsheet-metal pulleyssuch, for example, as illustrated in patents toOorscaden, No. 595,559, dated December 14, 1897, and No. 575,106, datedJanuary 12, 1897-'-the spokes or arms are formed of sheet metal andunited into an integral structure adjacent to the center of radiation bya hub or curved portion. It is essential in the manufacture of thesepulleys that the ends of the arms shall be uniform and shall be punchedwith rivet or bolt holes adjacent to said ends, so that the assemblingof the several parts making up the complete article may be speedily andefficiently accom plished.

The improvements embodied in this application are specially designed forshearing and punching the ends of the spoke-arms, and thereby securingthe above results.

In carrying out this invention there is provided a set of dies, in whichone part thereof, preferably the lower, is furnished with one or moredie-plates, preferably adjustable, and a suitable clamping device forholding the spoke-arm in position. 'Where several punching-die platesare employed, the adjustment thereof is made in radial lines from theclamping devices, and said latter is arranged to act upon the hubportion of the blank. The other portion of the dies is provided withcorresponding guide or guides in which are adjustably secured suitablepunches, adapted Serial No.- 692,459. (No model.)

to operate in connection with the punch-plates of the lower die.

It is further preferred that the two parts of these dies shall beprovided, respectively, with the blades of a suitable shear, whichblades or cutters are preferably slightly curved and adapted to shearthe extreme outer ends of the spoke-arms, so that the said arms from thehub portion are absolutely of the same length, not only in the sameblank, but in any series of blanks treated in the same dies. From thisit is seen that any spokeblank of a given size will ,fit any rim of thesame corresponding size of pulley and insure an absolutely true pulleybeing the result.

This invention will be better understood by reference to theaccompanying drawings, in which Figure 1 is an inverted plan View of theupper die. Fig. 2 is a plan view of the lower die. Fig. 3 is a sectionalelevation on line 'y y of Fig. 2 and taken through both dies whenproperly arranged one above the other. Fig. 4 is a transverse section online a; x of Fig. 3,and Fig. 5 is a plan view of the spoke-blank.

A isa base-plate of the lower die and is provided with a centralstationary semicircular clamping-jaw 0, having an internal cur vaturecorresponding to the curvature of the hub portion Q of the blank, Fig.5. This jaw is made removable from the body-plate A and is fittedthereon in a recess or socket 0, so that other sizes of jaws may besubstituted to suit difierent diameters of hubs.

E is a removable clamping-jaw connected to a reciprocating bar F, guidedin suitable guides e and adapted to be moved to or from the stationaryjaw O. The j aw-E corresponds to the curvature of the jaw 0, allowingfor the thickness of the metal of the hub portion, and said jaw E isprovided with two lateral shoulders (clearly shown in Fig. 2) to receivethe edges of the blank and force the curved hub portion evenly into thejaw O. The

movable jaw and its bar F are reciprocated by a hand-lever G and link g.The proportion of these parts is such that when the lever G is thrownthrough one hundred and eighty degrees the jaw E clamps the blank andbecomes locked.

The base-plate A is furthermore provided with radial guides B B B,arranged at sixty degrees apart; but the invention is not confined toany particular number or angular arrangements of these guides. In eachof these guides is arranged an adjustable block D, which is movable toor from the clamping jaw O and may be locked in any one of numerouspositions by means of the spring-actuated plugs h, operatinginconnection with the fixed perforated plate II, secured to the.

frame A. By'employing two of these plugs a greater possible adjustmentis secured with a limited number of holes in the perforated plate. Theinvention is not confined, however, to any special method of adjustmentfor the blocks D. The upper portions of these blocks are provided with apunch-plate d, which is also provided with a rectangular orsubstantially rectangular aperture and the edge of which adjacent to thepunch-holes to receive the punches constitutes one blade of a shear I.The block D has a vertical aperture through it, which permits the pieceof metal sheared from the arms to fall down and escape through anapertureA in the base plate or frame A. As shown,in the drawings, thepunch-plate d has provision for receiving two punches to enable twoholes to be punched in the end of each arm; but this is not essential,as a single hole might be employed if so desired. It will be understoodthat each ofthe blocks D corresponding to the several guides B isindependently adjustable and may be adjusted to suit the radial lengthof the spokes, so that the one set of dies will answer for a number ofspokes of different diameters of pulleys.

Referring now to the upper die, we have the base plate or frame Jprovided with radial guides N N N corresponding to the radial guides Bof the lower die structure. In each of these guides N a block Kisadjustably secured and may be held in adjusted position byspring-actuated locking-plugsl and a perforated plate L corresponding tothe simi lar parts h H on the lower die structure. The block K isfurther provided with sockets which receive the punches 7c, the samebeing clamped in position by the set-screws O and are adapted to operatein conjunction with the holes in the punch-plate cl, as clearly shown inFigs. 3 and 4. Secured to the block K, immediately to the rear of thepunches, is

Y the shear-blade z', constituting the upper blade of the shear I. Thecutting edges of the shear I are made curved, as indicated in Figs. 1and 2, to correspond to the peripheral curve at the outer ends of therim, though this is not essential. The block K is further provided witha downwardly-extending portion, which moves within the opening of thedie-plate d and. holds the shear-blade 2' up to its lower member, asindicated in Fig. 3.

The blank P to be operated upon is indicated in Fig. 5 and constitutesthe hub portion Qand the radial arms 19. When this spoke-blank isinserted between the dies, it takes the position indicated in dottedlines at P in Fig. 3 and is perforated and sheared at the ends of thearms, as indicated by dotted lines at R in Fig.3. A stripper-plate M isattached to the die-plate d, so as to strip the ends of the arms fromthe punches 7.; when the latter are receding. The lateral spaces betweenthe stripper M and the die-plate (I may be provided with guide-plugs SS, held in place by suitable pins, as indicated in Fig.- 4, and betweenwhich the spoke-arms are guided. These plugsS S may be changed to suitdifferent widths of spoke-arms.

. The invention is not confined to the specific details of.construction, as these parts maybe greatly modified without departingfrom the principles of the invention, and hence they may be modified orchanged so long as the characteristic features of the die structures arenot eliminated. It is also evident that, broadly considered, theinvention is not confined to the employment of two or moreradially-disposed guides and punching and shearin g devices, asa singleset of said devices may be employed if so desired. It isfurthermore tobe understood that while it is preferred to simultaneously punch andshear the ends of the arms either of said operations may be omitted andthe corresponding portion eliminated from the die structure, as hereshown, without departing from the generic features of the invention.

What is claimed as new, and desired to be secured by Letters Patent, is-

l. The combination of two frames each independent of the other and alsorelatively movable to and from each other, a suitable clamping devicearranged wholly upon one of said frames, and two or more sets ofpunching devices having their elements secured partly upon each of theframes and arranged radially about the clamping devices.

2.' The combination of two frames, each independent of the other andalso relatively movable to and from each other, a suitable clampingdevice arranged upon one of said frames, two'or more sets of punchingdevices having their elements secured respectively upon both frames andarranged radially about the clamping devices, and means for adj ustingsaid punching devices radially to or from the clamping devices.

3. The combination of two frames relatively movable to and from eachother, a suitable clamping device arranged upon one of said frames, andtwo or more sets of shearing devices having their elements securedrespectively upon both frames and arranged radially about the clampingdevices.

4. The combination of two frames relatively movable to and from eachother, a suitable clamping device arranged upon one of said frames, twoor more sets of shearing devices having their elements securedrespectively upon both frames and arranged radially about the clampingdevices, and means for adj usting said shearing devices radially to orfrom the clamping devices.

5. The combination of two frames relatively movable to and from eachother, a suitable clamping device arranged upon one of said frames, twoor more sets of punching devices and two or more sets of shearingdevices having their elements respectivelysecured upon both frames andarranged radially about the clamping devices.

6. The combination of two frames relatively movable to and from eachother, a suitable clamping device arranged upon one of said frames, twoor more sets of punching devices and two or more sets of shearingdevices having their elements respectively secured upon both frames andarranged radially about the clamping devices, and means for adjustingsaid punching and shearing devices radially to or from the clampingdevices.

7. The combination of two frames relatively movable to or from eachother, to or more diverging guides arranged respectively upon each ofsaid frames, adjustable blocks arranged upon each of said guides,punchingplates secured or carried by the blocks corresponding to thesets of guides on one of the frames, and punches carried by and securedto the blocks corresponding to the guides of the other frame.

8. The combination of two frames relatively movable to or from eachother, two or more diverging guides arranged respectively upon each ofsaid frames, adjustable blocks arranged upon each of said guides,punch-plates secured to or carried by the blocks corresponding to thesets of guides on one of the frames, punches carried by and secured tothe blocks corresponding to the guides of the other frame, and lockingdevices for locking the several blocks in adjusted position within theirrespective guides.

9. The combination of two frames relatively movable to or from eachother, two or more diverging guides arranged respectively upon each ofsaid frames, adjustable blocks arranged upon each of said guides,shear-plates secured to or carried by the blocks corresponding to thesets of guides on one of the frames, and a second set of shear-platescarried by and securedto the blocks corresponding to the guides of theother frame.

10,. The combination of two frames relatively movable to or from eachother, two or more diverging guides arranged respectively upon each ofsaid frames, adjustable blocks arranged upon each of said guides,shearplates secured to or carried by the blocks corresponding to thesets of guides on one of the frames, a second set of shear-platescarried by and secured to the blocks corresponding to the guides of theother frame, and locking devices for locking the several blocks inadjusted position upon their respective guides.

11. The combination of two frames relatively movable to or from eachother, two or more diverging guides arranged respectively upon each ofsaid frames, adjustable blocks arranged upon each of said guides,punchplates secured to or carried by the blocks corresponding to thesets of guides on one of the frames, punches carried by and secured tothe blocks corresponding to the guides of the other frame, and suitableguides for holding the blanks to be punched in position laterallybetween the punches and punch-plates.

12. The combination of two frames relatively movable to or from eachother, punching devices part of which is secured to one frame and partto the other frame, and a clamp carried wholly by one of said frames andconsisting of two jaws having their clampingsurfaces arrangedsubstantially parallel to the direction of movement of the punch andlaterally arranged relatively to the punching devices.

13. The combination of two frames relatively movable to or from eachother, a clamp carried by one of said frames, punching devices part ofwhich is secured to one frame and part to the other frame and laterallyarranged relatively to the clamp, and means for adj nsting the punchingdevices to or from the clamp.

14. The combination of two frames relatively movable to or from eachother, a clamp carried by one of said frames, and shearing devices partof which is secured to one frame and part to the other frame andlaterally arranged relatively to the clamp, so as to be located whollyto one side of and considerably removed from it.

15. The combination of two frames relatively movable to or from eachother, a clamp carried by one of said frames, shearing devices part ofwhich is secured to one frame and part to the other frame and laterallyarranged relatively to the clamp, and means for adjusting the severalshearing devices to or from the clamp.

16. The combination of two frames relatively movable to or from eachother, a clamp carried by one of said frames, punching and shearingdevices parts of which are secured to one frame and parts to the otherframe and laterally arranged relatively to the clamp, and means for adjnsting the several punching and shearing devices to or from the clamp.

17. The combination of two frames relatively movable to or from eachother, a semicircular clamping-j aw secured to one of said frames, asemicircular movable jaw movable to or from the fixed jaw adapted toclamp a semicircular piece of sheet metal thereon, and a series of setsof punching devices carried by the two frames and radially disposedabout the fixed clamping-jaw.

18. The combination of two frames relatively movable to or from eachother, a semii In testimony of which inVehtionI hereunto circularclamping-jaw secured to one ofsaid set my hand. 7 7 frames, asemicircular movable jaw movable ADELINE J. CORSOADEN,

to or from the fixed jaw adapted to clamp a Administmtr'iw of the estateof Thomas 007's 5 semicircular piece of sheet metal thereon, and caden,deceased.

a series ofsets of shearing devices carried by Witnesses:

the two frames and radially disposed about HENRY SMALLY,

the fixed clamping-jaws JERE. J. CROWLEY.

